Shiva Purana
धर्ममर्थं च कामं वा मोक्षं वातिजरातुरः॥ अशक्तस्साधितुं तस्माद्युवा धर्मं समाचरेत्॥ ६५॥
A sick and an aged man is incompetent to strive for virtue, wealth, love and salvation. Hence a young man shall strive for these virtues.
english translation
dharmamarthaM ca kAmaM vA mokSaM vAtijarAturaH॥ azaktassAdhituM tasmAdyuvA dharmaM samAcaret॥ 65॥
hk transliteration by Sanscript